Realikety is waiting for review. The first app for "Liking" reality is available on the appstore soon! Just walk on the street and like anything you want. People will see, what was liked by how many people and they can even comment on it! You can optionally also share your likes on Facebook and you can get all the necessary info from wikipedia on the fly.
If you want to review or test the app before release, write an email with your UDID to [email protected] We will handle tests through Testflightapp, so you will need a registration there.